Question

In which of the following pairs do 1 g of each have an equal number of molecules?
(1) N,O and CO
(2) N, and C O (3) N, and Co
(4) N,O and CO​

Answer 1

When, the molar masses of two compounds are same, then 1 g of these compounds will have equal number of molecules.

(A) The molar mass of N

2

O is 44 g/mol and the molar mass of CO is 28 g/mol. Hence, 1 g of these compounds will have different number of molecules.

(B) The molar mass of N

2

is 28 g/mol and the molar mass of C

3

O

2

is 68 g/mol. Hence, 1 g of these compounds will have different number of molecules.

(C) The molar mass of N

2

is 28 g/mol and the molar mass of CO is 28 g/mol. Hence, 1 g of these compounds will have equal number of molecules.

(D) The molar mass of N

2

O is 44 g/mol and the molar mass of CO

2

is 44 g/mol. Hence, 1 g of these compounds will have equal number of molecules.

Answer 2

Answer:

n,o and co.............